Question

What is 6.55 in a mixed number?

Answer 1

655/100 is the number 6.55 as a mixed number

Answer 2

First, write it out. 6.55 = 6$\frac{55}{100}$.
We need to simplify. Let's start by dividing the numerator and denominator by compatible numbers. I'll use 5 to start. 
55÷5 = 11. 100÷5 = 20.
You cannot simplify $\frac{11}{20}$ further, as 11 is a prime number.
Therefore, 6.55 in a mixed number form is 6$\frac{11}{20}$.
Hope that helped you.